ATI RN
Test Questions on Autonomic Nervous System MCAT Questions
Question 1 of 5
What neurotransmitter is released at the neuromuscular junction?
Correct Answer: D
Rationale: Acetylcholine (ACh) is released at the neuromuscular junction to stimulate skeletal muscle contraction. Norepinephrine acts at sympathetic synapses, not the neuromuscular junction.
Question 2 of 5
Cell bodies for the motor supply of the facial nerve lie
Correct Answer: D
Rationale: The facial nerve (CN VII) motor nucleus is in the pons, controlling facial expression muscles. The hypothalamus and midbrain are incorrect, and the third ventricle floor is unrelated.
Question 3 of 5
The afferent path of the sneeze reflex is mediated via the
Correct Answer: B
Rationale: The sneeze reflex’s afferent path is via the maxillary nerve (V2), sensing nasal irritation, with efferent via CN VII/X. V1 senses the cornea, V3 the jaw, and vagus (X) isn’t primary here.
Question 4 of 5
referred pain from pancreatitis is at what level?
Correct Answer: A
Rationale: Pancreatitis referred pain is at T7-T8, due to visceral innervation from the greater splanchnic nerve (T5-T9), projecting to the epigastric region.
Question 5 of 5
The trigeminal nerve
Correct Answer: C
Rationale: The trigeminal nerve (CN V) has its motor nucleus in the upper pons, with three divisions (V1, V2, V3). V3 has motor and sensory roles, and exits vary (e.g., V1 via superior orbital fissure).